IntelliJ IDEA 2017.2 Help

Keymap:

Rails/Spring Support in IntelliJ IDEA

This feature is supported in the Ultimate edition only.

The following is only valid when Ruby Plugin is installed and enabled!

Executing Rails development tasks sometimes involves overheads, because every time the entire Rails environment should be reloaded. You can avoid it using the Spring server, which loads the environment only once.

Prerequisites

You are working with macOS or Linux operating system.

Prior to launching Spring server, make sure spring gem, and the corresponding testing gems (rspec-rails, cucumber, cucumber-rails, etc.) are used in your application.